Florian Znaniecki
15. Jänner 1882 – 23. März 1958
The Polish Peasant in Europe and America: Monograph of an Immigrant Group; Volume 2
William Isaac Thomas
The Polish Peasant in Europe and America; Monograph of an Immigrant Group; Volume 5
William Isaac ThomasThe Polish Peasant in Europe and America: Monograph of an Immigrant Group; Volume 1
William Isaac Thomas